Cisco Systems 1721 用户手册

This section describes the router back panel ports and LEDs, which are shown in 

 and described in 

 and 

Ethernet port

10/100 
ETHERNET
(yellow)

Connects the router to the local Ethernet network 
through this port. This port autosenses the speed 
(10 Mbps or 100 Mbps) and duplex mode (full- or half-) 
of the device to which it is connected and then operates 
at the same speed and in the same duplex mode.

Auxiliary port

AUX 
(black)

Connects to a modem for remote configuration with 
Cisco IOS software.

Console port

CONSOLE
(blue)

Connects to a terminal or PC for local configuration 
using Cisco IOS software.

Power

socket

+5, +12, -12 VDC

CONSOLE

10/100 ETHERNET

AUX

FDX

LINK

100

WIC 0 OK

WIC 1 OK

MOD OK

Power switch

Model
Cisco 1721

65524

FDX/100/

LINK LEDs

Auxiliary port

Kensington-compatible

locking socket

WIC 0

OK LED

10/100-Mbps
Ethernet port

MOD OK

LED

WIC 1 OK

LED

WIC 0 slot

WIC 1 slot

Console port